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WIDE-RANGE CROP PHENOLOGY EXTRACTION METHOD BASED ON MORPHOLOGICAL MODELING METHOD
WIDE-RANGE CROP PHENOLOGY EXTRACTION METHOD BASED ON MORPHOLOGICAL MODELING METHOD
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机译：基于形态学造型方法的宽范围作物候选方法
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摘要
Disclosed is a wide-range crop phenology extraction method based on a morphological modeling method. The method comprises: acquiring a multi-year vegetation index time sequence curve in a localized geographic region; performing smooth fitting on the vegetation index time sequence curve by using a dual logistic function fitting means; establishing morphological models by using reference curves and reference points of agrometeorological stations; performing morphological model fitting by means of transformation; and obtaining a phenological period extraction value of the localized geographic region by means of calculation using the optimal scaling parameter. According to the method of the present invention, macroscopic features of the curve are used, such that the influence of localized fluctuation and noise of the curve can be reduced, and a better extraction precision is obtained; and each phenological period of a crop can be extracted at the same time, and there is no need to respectively set different measurement standards, such that the method can be applied to wide-range crop phenology extraction.
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